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https://issues.apache.org/jira/browse/FLINK-34648?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17825490#comment-17825490
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Hongshun Wang edited comment on FLINK-34648 at 3/12/24 2:11 AM:
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During the process of task recovery, will the enumerator not restart? If
enumerator restarts and restore from last checkpoint, the event will not exist.
was (Author: JIRAUSER298968):
During the process of task recovery, will the enumerator not restart?
> Avoid RPC time when apply SchemaChangeEvent to external system
> --------------------------------------------------------------
>
> Key: FLINK-34648
> URL: https://issues.apache.org/jira/browse/FLINK-34648
> Project: Flink
> Issue Type: Improvement
> Components: Flink CDC
> Affects Versions: cdc-3.1.0
> Reporter: LvYanquan
> Priority: Major
> Fix For: cdc-3.1.0
>
>
> When SchemaOperator receive SchemaChangeEvent, it will send request to
> SchemaRegistry and wait for applying this SchemaChangeEvent to external
> system synchronously.
> However, if this process take too long time, it will cause RPC
> TimeoutException, and During the process of task recovery, there may be other
> errors like `AddColumnEvent is already existed`.
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